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disable duplicate ip address conflict checking in windows

To turn off gratuitous ARP in the guest operating system:
  1. Open the Registry editor.
    • In Windows XP to Windows Server 2003 - Click Start > Run, type regedit, and click OK.
    • In Windows 7 and Current - Click Start, type regedit, and click OK.
  2. Locate this registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
  3. Click Edit > New, and click DWORD Value.
  4. Type ArpRetryCount.
  5. Right-click the ArpRetryCount registry entry and click Modify.
  6. In the Value box, type 0 and click OK.
  7. Exit the Registry Editor.
  8. Shut down the guest operating system and power off the virtual machine.
  9. Change the virtual machine back to a network vSwitch with the uplink.
  10. Power on the virtual machine.
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